We have managed to share the Official Micromax A121 Stock Firmware ROM (flash file) on this page. The Firmware Package contains Flash Tool, Driver, Flash File and Instructions manual to flash it.
Micromax A121 Firmware
Package Name: Micromax_A121_V2_150514_CMD.zip
Package Version: V2
Package Size: 547 MB
Firmware Link: Click Here to get the Firmware
How to Flash
Step 1: Download and extract the Micromax A121 Firmware Package on your computer.
Step 2: After extracting the firmware package, you will be able to get the Flash Tool, USB Driver, Flash File and Instructions Manual.
Step 3: Firstly, install the provided USB Driver on your computer. If in case USB Driver is already installed then SKIP this Step.
Step 4: Then Open the Firmware + Tool folder and open the Bat file.
Step 5: Then follow the screen instructions to flash it on your Micromax A121 Smartphone.
[*] Backup: Take a backup of everything before flashing the above firmware, as because your personal data will be removed (deleted) permanently after flashing the firmware.
[*] The above firmware (ROM) if Officially released by the Micromax Company. Official ROM helps you to fix the device if in case your device is having any Bootloop, Hang issue, or Dead Issue.